Phantom problems like this usually end up being something silly, like a shorted battery harness.

I'd just swap parts until it goes away, I suspect that it isnt something mechanical because those problems tend to be more consistent in my experience, and if the noid works in other guns same as healthy noids....

Put hybrid hose, hybrid lpr, new solenoid, and cp ram adjuster.. i think i got it working now . sounds like it is shooting at 280fps, and shoots at 9ms dwell now with no fsdo nor shootdown . i think the hose was to small that i bought from www.xtremepbma.com/